iMX53 NAND NFC Kernel support

[bdp42]

Hi,

I have a simple question about the correct kernel config option for iMX53 NAND NFC support. Should CONFIG_MTD_NAND_IMX_NFC should be enabled in the kernel?

The reason I ask is that the imx5_defconfig file (which supports MX53 NAND) does not have it set yet it looks like it should be set. Here's the relevant piece of the config file

• #
• # Disk-On-Chip Device Drivers
• #
• # CONFIG_MTD_DOC2000 is not set
• # CONFIG_MTD_DOC2001 is not set
• # CONFIG_MTD_DOC2001PLUS is not set
• CONFIG_MTD_NAND=y
• # CONFIG_MTD_NAND_VERIFY_WRITE is not set
• # CONFIG_MTD_NAND_ECC_SMC is not set
• # CONFIG_MTD_NAND_MUSEUM_IDS is not set
• # CONFIG_MTD_NAND_GPIO is not set
• CONFIG_MTD_NAND_IDS=y
• # CONFIG_MTD_NAND_DISKONCHIP is not set
• # CONFIG_MTD_NAND_NANDSIM is not set
• # CONFIG_MTD_NAND_IMX_NFC is not set
• CONFIG_MTD_NAND_MXC_V3=y
• # CONFIG_MTD_NAND_MXC_SWECC is not set
• # CONFIG_MTD_NAND_MXC_FORCE_CE is not set
• # CONFIG_MXC_NAND_LOW_LEVEL_ERASE is not set
• # CONFIG_MTD_NAND_PLATFORM is not set
• # CONFIG_MTD_ALAUDA is not set
• # CONFIG_MTD_ONENAND is not set

Can someone clarify this?

Thanks,

Bruno

[igorpadykov]

Hi Bruno

I believe not since one has already CONFIG_MTD_NAND_MXC_V3=y,

also refer to attached file. In ltib build one can select ard board,

it has nand support

L2.6.35_11.05_ER_SOURCE : Linux 2.6.35 Source Code Files and documentation 11.05 for i.MX53 SABRE Tablet.

Best regards

igor

[bdp42]

Hi Igor,

OK. It looks like CONFIG_MTD_NAND_MXC_V3=y is the correct configuration option to use the iMX53 NAND Flash Controller.

I'm just curious what CONFIG_MTD_NAND_IMX_NFC  is used for?

Bruno

[igorpadykov · Accepted solution]

Hi Bruno

CONFIG_MTD_NAND_IMX_NFC was

for older NFC revisions used in i.MX21,MX31.

Best regards

igor